Several years ago, Kaoru went through a divorce and has since lived with her only son, Masao. With their lives finally gaining some stability, they decided to leave their old, run-down studio apartment. Their new home is spacious and brings comfort to both Kaoru and Masao. Unknown to others, they secretly share an incestuous relationship. For the two of them, this larger space becomes a new playground for pleasure. And when night falls, Kaoru comes harder than ever, her body convulsing with climax as she rides Masao's cock with intense, bouncing passion, making the night even more intense.